1 """ 2 Objective-C runtime wrapper for use by LLDB Python formatters 3 4 part of The LLVM Compiler Infrastructure 5 This file is distributed under the University of Illinois Open Source 6 License. See LICENSE.TXT for details. 7 """ 8 import lldb 9 import time, datetime 10 import inspect 11 12 class TimeMetrics: 13 @staticmethod 14 def generate(label=None): 15 return TimeMetrics(label) 16 17 def __init__(self,lbl=None): 18 self.label = "" if lbl is None else lbl 19 pass 20 21 def __enter__(self): 22 caller = inspect.stack()[1] 23 self.function = str(caller) 24 self.enter_time = time.clock() 25 26 def __exit__(self, a,b,c): 27 self.exit_time = time.clock() 28 print "It took " + str(self.exit_time - self.enter_time) + " time units to run through " + self.function + self.label 29 return False 30 31 class Counter: 32 def __init__(self): 33 self.count = 0 34 self.list = [] 35 def update(self,name): 36 self.count = self.count + 1 37 # avoid getting the full dump of this ValueObject just to save its metrics 38 if isinstance(name,lldb.SBValue): 39 self.list.append(name.GetName()) 40 else: 41 self.list.append(str(name)) 42 def __str__(self): 43 return str(self.count) + " times, for items [" + str(self.list) + "]" 44 45 class MetricsPrinter_Verbose: 46 def __init__(self,metrics): 47 self.metrics = metrics 48 def __str__(self): 49 string = "" 50 for key,value in self.metrics.metrics.items(): 51 string = string + "metric " + str(key) + ": " + str(value) + "\n" 52 return string 53 54 class MetricsPrinter_Compact: 55 def __init__(self,metrics): 56 self.metrics = metrics 57 def __str__(self): 58 string = "" 59 for key,value in self.metrics.metrics.items(): 60 string = string + "metric " + str(key) + " was hit " + str(value.count) + " times\n" 61 return string 62 63 class Metrics: 64 def __init__(self): 65 self.metrics = {} 66 67 def add_metric(self,name): 68 self.metrics[name] = Counter() 69 70 def metric_hit(self,metric,trigger): 71 self.metrics[metric].update(trigger) 72 73 def __getitem__(self,key): 74 return self.metrics[key] 75 76 def __getattr__(self,name): 77 if name == 'compact': 78 return MetricsPrinter_Compact(self) 79 if name == 'verbose': 80 return MetricsPrinter_Verbose(self) 81 raise AttributeError("%r object has no attribute %r" % 82 (type(self).__name__, name)) 83 84 def __str__(self): 85 return str(self.verbose) 86 87 def metric_success(self,metric): 88 total_count = 0 89 metric_count = self[metric].count 90 for key,value in self.metrics.items(): 91 total_count = total_count + value.count 92 if total_count > 0: 93 return metric_count / float(total_count) 94 return 0 95
